CN210386696U - Lightning arrester cleaning device - Google Patents
Lightning arrester cleaning device Download PDFInfo
- Publication number
- CN210386696U CN210386696U CN201920647092.0U CN201920647092U CN210386696U CN 210386696 U CN210386696 U CN 210386696U CN 201920647092 U CN201920647092 U CN 201920647092U CN 210386696 U CN210386696 U CN 210386696U
- Authority
- CN
- China
- Prior art keywords
- sleeve
- cleaning
- lightning
- cleaning device
- lightning receptor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Cleaning In General (AREA)
Abstract
The utility model provides a lightning receptor cleaning device, which comprises a cleaning component and a limiting sleeve; the cleaning assembly is sleeved on the lightning rod, two ends of the cleaning assembly are respectively rotatably connected with the limiting sleeve, and the limiting sleeve is detachably connected with the lightning rod; the cleaning assembly comprises a cleaning sleeve and a brush, the brush is arranged on the inner wall of the cleaning sleeve, and the bristles of the brush are in contact with the side wall of the lightning rod; the cleaning sleeve is provided with a flow guide notch, and when air flows in the flow guide notch, the cleaning sleeve rotates by taking the lightning rod as an axis. A arrester cleaning device, can clean the attachment on the lightning rod, avoid the attachment to cause the influence to the lightning-arrest effect of arrester.
Description
Technical Field
The utility model belongs to lightning protection equipment field especially relates to a arrester cleaning device.
Background
A lightning receptor is a metallic object, also known as a lightning rod, for receiving direct lightning strikes. Under the general condition, the lightning receptor can set up on the outstanding position at protection thing top, when thunderstorm weather appears, the lightning receptor can lead to self with the thunder and lightning to with the electric energy direction earthing device that the thunder and lightning carried, thereby avoid the thunderstorm to cause the injury to the protection thing.
In existing factories, lightning receptors are usually installed on the top of the chimney, so as to protect the chimney from lightning strikes. However, the air outlet at the top of the chimney discharges waste gas outwards, and when the waste gas contains smoke-dust type emissions, the discharged smoke dust can be accumulated on the surface of the lightning rod, so that a shell with accumulated smoke dust appears outside the lightning rod in the past, and the sensitivity of the lightning receptor is affected. And when containing oily emission in the waste gas, oily material can lead to the corruption of lightning rod on attaching to the surface of lightning rod for a long time, and after the lightning rod corrodes, its diameter can become thin, consequently can promote the resistance of lightning receptor, reduces the conduction speed of lightning receptor.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention is directed to a lightning receptor cleaning device for cleaning the surface attachments of the lightning receptor.
In order to achieve the above purpose, the technical scheme of the utility model is realized like this:
a lightning receptor cleaning device comprises a cleaning assembly and a limiting sleeve; the cleaning assembly is sleeved on the lightning rod, two ends of the cleaning assembly are respectively rotatably connected with the limiting sleeve, and the limiting sleeve is detachably connected with the lightning rod; the cleaning assembly comprises a cleaning sleeve and a brush, the brush is arranged on the inner wall of the cleaning sleeve, and the bristles of the brush are in contact with the side wall of the lightning rod; be equipped with the water conservancy diversion incision on the clean sleeve, when there is air to flow in the water conservancy diversion incision, clean sleeve will use the lightning rod to rotate as the axle.
Further, clean subassembly includes connecting sleeve, connecting sleeve's one end and spacing sleeve pass through the flat bearing and rotate and be connected, the other end with clean sleeve can dismantle the connection.
Furthermore, the limiting sleeve comprises a conical cylinder, a positioning section extends upwards from the small-caliber end of the conical cylinder, an annular supporting plate extends towards the peripheral side of the large-caliber end, and a cutting groove is formed in the top surface of the positioning section.
Furthermore, the top of connecting sleeve is equipped with and holds the chamber, annular supporting plate sets up and holds the intracavity portion, is equipped with between annular supporting plate and the top surface that holds the chamber planar bearing.
Furthermore, a discharge hole is formed in the conical cylinder below the cleaning sleeve and used for discharging fallen attachments.
Furthermore, be equipped with the holding tank on the lateral wall of location section, be equipped with the staple bolt in the holding tank is inside, through the staple bolt can be adjusted the internal diameter of location section to make the location section hold tightly on connecing the pole.
Furthermore, clean telescopic both ends all are equipped with the external screw thread be equipped with on the connecting sleeve with external screw thread assorted screw hole realizes dismantling through screw-thread fit and is connected between clean sleeve and the connecting sleeve.
Furthermore, the cleaning sleeve comprises a first semicircular plate and a second semicircular plate, and the two semicircular plates are oppositely spliced to form the cylindrical cleaning sleeve.
Furthermore, the splicing surface of the first semicircular plate is provided with at least two positioning pins, and correspondingly, the splicing surface of the second semicircular plate is provided with positioning holes for accommodating the positioning pins.
Furthermore, the opening area of the diversion incision close to the outer wall of the cleaning sleeve is larger than the opening area of the diversion incision close to the inner wall of the cleaning sleeve.
Compared with the prior art, a lightning receptor cleaning device have following advantage:
(1) a arrester cleaning device, can make clean subassembly rotate with the help of wind-force, consequently set up brush on clean sleeve inner wall can take place the friction with the surface of lightning rod, can clean the attachment on the lightning rod through this process, avoid the emission of chimney to cause the influence to the working effect of lightning arrester.
(2) A arrester cleaning device, be connected for dismantling between its limit sleeve and the arrester, consequently the operation workman can be fast, convenient install this device on all kinds of arrester. Simultaneously, the interval between two spacing sleeves can be adjusted according to actual conditions for this device can adapt to the lightning rod of co-altitude not. In addition, because the connection can be dismantled between clean sleeve and the connecting sleeve, and clean sleeve is split type design, so the dismantlement process of this device is very convenient, not only makes this device adapt to the arrester of different diameters, can also make things convenient for operating personnel to dismantle the washing to clean sleeve.
Drawings
The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:
fig. 1 is a schematic view illustrating a use state of a cleaning device according to an embodiment of the present invention;
fig. 2 is an exploded view of a cleaning device according to an embodiment of the present invention;
fig. 3 is a cross-sectional view of a cleaning device according to an embodiment of the present invention, taken along a horizontal direction;
fig. 4 is a cross-sectional view of a spacing sleeve and a connecting sleeve according to an embodiment of the present invention;
fig. 5 is a schematic structural view of a limiting sleeve according to an embodiment of the present invention.
Description of reference numerals:
1-lightning rod; 2-cleaning the sleeve; 21-a first semi-circular plate; 211-a locating pin; 22-a second semicircular plate; 221-positioning holes; 3, brushing; 4-flow guide incision; 5-a limit sleeve; 51-a positioning section; 511-grooving; 512-accommodating grooves; 52-a conical cylinder; 521-a discharge orifice; 53-annular support plate; 6-plane bearing; 7-connecting the sleeve; 71-a containment chamber; 72-a threaded hole; 8-anchor ear.
Detailed Description
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
A lightning receptor cleaning device comprises a cleaning assembly and a limiting sleeve 5, and figure 1 is a schematic structural view of the device arranged on a lightning rod 1. As shown in the figure, spacing sleeve 5 is total two, and all can dismantle with lightning rod 1 and be connected, can install this device on lightning rod 1 through spacing sleeve 5 to installation for clean subassembly provides the basis.
The structure of the limiting sleeve 5 can be illustrated in fig. 5, as shown in the figure, the limiting sleeve 5 includes a conical cylinder 52, a positioning section 51 is arranged at the small-caliber end of the conical cylinder 52 and extends upwards, and an annular supporting plate 53 extends towards the circumferential side at the large-caliber end. Wherein the inner wall of location section 51 contacts with the lateral wall of lightning rod 1, can realize the fixed or between stop sleeve 5 and the lightning rod 1 through the internal diameter of adjustment location section 51. Specifically, a cutting groove 511 is formed in the top surface of the positioning section 51, an accommodating groove 512 is formed in the side wall of the positioning section 51, and the hoop 8 is arranged inside the accommodating groove 512. Because the positioning section 51 is provided with the cutting groove 511, the inner diameter of the positioning section 51 can change along with the change of the circumferential pressure, after the limiting sleeve 5 is sleeved on the lightning rod 1, the circumferential pressure can be applied to the positioning section 51 by adjusting the holding degree of the hoop 8, and the inner diameter of the positioning section 51 can be reduced at the moment. When the inner wall of the positioning section 51 is tightly attached to the lightning rod 1, the limiting sleeve 5 can be fixed on the lightning rod 1.
In addition, in order to facilitate the detached attachments to leave the device, the conical cylinder 52 arranged below the cleaning sleeve 2 is provided with a discharge hole 521, and the attachments can leave the device through the discharge hole 521 after being separated from the lightning rod 1, so that the accumulation of the attachments inside the device is avoided.
In this embodiment, the rotatable cover of the clean subassembly of the clean work of carrying out the attachment is established on the lightning rod 1, and its both ends rotate with spacing sleeve 5 respectively and are connected, and clean subassembly is used for cleaning the attachment attached to on the lightning rod 1, avoids the attachment to cause the influence to the lightning-arrest effect of arrester. As shown in fig. 2 and 3, the cleaning assembly includes a cleaning sleeve 2 and a brush 3, a flow guide notch 4 is formed in a side wall of the cleaning sleeve 2, when air flows around the device, a wind resistance is generated on the side wall of the flow guide notch 4, and the cleaning sleeve 2 is driven to rotate by the wind resistance acting on the flow guide notch 4 due to the rotatable connection between the cleaning assembly and the limiting sleeve 5. Be equipped with on the inner wall of clean sleeve 2 brush 3, the brush hair of brush 3 contacts with the lateral wall that connects flash rod 1, when clean sleeve 2 receives the air current to order about and when beginning to rotate, brush 3 can and connect flash rod 1 between take place relative motion, utilize the brush hair and connect the friction between flash rod 1 to make the attachment drop, accomplish the clean task that connects flash rod 1.
For the rotation degree of difficulty that reduces cleaning sleeve 2 for cleaning sleeve 2 can rotate when the air flow velocity is less, the shape of water conservancy diversion incision 4 can depend on figure 3 and design. As shown, the opening area of the diversion slits 4 near the outer wall of the cleaning sleeve 2 is larger than the opening area near the inner wall of the cleaning sleeve 2. Above-mentioned setting enables the area of the side of admitting air of water conservancy diversion incision 4 to be greater than the area of the side of giving vent to anger, therefore the air current can obtain the pressure boost when flowing along water conservancy diversion incision 4, and the air current after the pressure boost can produce bigger effort to clean sleeve 2 for clean sleeve 2 takes place to rotate more easily. Meanwhile, the pressurized air flow is blown into the cleaning sleeve 2, and the inside of the cleaning sleeve 2 can be cleaned by the air flow, so that the fallen attachments are discharged out of the cleaning sleeve 2.
Because the specification kind of arrester is more, and installs the arrester under different occasions and have different emissions and adhere to the position, therefore clean subassembly still includes connecting sleeve 7 in this embodiment, connecting sleeve 7's one end and stop sleeve 5 pass through flat bearing 6 and rotate and be connected, and the other end can be dismantled with clean sleeve 2 and be connected. Make clean sleeve 2 possess the function of dismantling through setting up connecting sleeve 7 to replace clean sleeve 2 according to operating condition.
Specifically, as shown in fig. 4, the top of the connecting sleeve 7 is provided with an accommodating cavity 71, the annular support plate 53 is arranged inside the accommodating cavity 71, and the top surface of the annular support plate 53 is connected with the top surface of the accommodating cavity 71 through the flat bearing 6. The bottom of the cleaning sleeve 7 is provided with a threaded hole 72, the two ends of the cleaning sleeve 2 are provided with external threads matched with the threaded hole 72, and when the cleaning sleeve 2 is installed, the cleaning sleeve 2 is installed on the connecting sleeve 7 through threads.
When cleaning sleeve 2 bears wind-force and rotates, connecting sleeve 7 will rotate along with cleaning sleeve 2, and the existence of flat bearing 6 can reduce the frictional force between spacing sleeve 5 and connecting sleeve 7, avoids frictional action between the two to cause the influence to the work of cleaning the subassembly.
In addition, to facilitate the installation of the cleaning sleeve 2, the cleaning sleeve 2 in this embodiment may be a split design. Specifically, the cleaning sleeve 2 includes a first semicircular plate 21 and a second semicircular plate 22, and the open sides of the two semicircular plates are joined to each other when the cleaning sleeve is mounted, thereby forming a cylindrical cleaning sleeve 2. Because the cleaning sleeve 2 is located between the two limiting sleeves 5, the limiting sleeve located above needs to be detached in the installation process of the integrated cleaning sleeve 2, and the process consumes more time, so that the installation efficiency is reduced. The cleaning sleeve 2 in the split type design can be mounted without disassembling the limiting sleeve 5, and the overhead working time of operators is greatly shortened.
Optionally, in order to avoid the two semicircular plates from being dislocated during splicing, at least two positioning pins 211 are disposed on the splicing surface of the first semicircular plate 21, and correspondingly, positioning holes 221 for accommodating the positioning pins 211 are disposed on the splicing surface of the second semicircular plate 22. When the two semi-circular plates are installed, the two semi-circular plates are respectively placed on two sides of the lightning rod 1, the positioning pins 211 are inserted into the corresponding positioning holes 221, relative movement of the two semi-circular plates during installation can be avoided through the matching of the positioning pins 211 and the positioning holes 221, and the difficulty in assembling the cleaning sleeve 2 is reduced.
The working process of the above scheme is explained as follows:
before the installation of the device, the specification of the lightning rod 1 needs to be measured, and the limiting sleeve 5 with the proper inner diameter is selected for installation.
When installing, at first install two spacing sleeves 5 on lightning rod 1, and for the position of treating of lightning rod 1 between two spacing sleeves 5, select the suitable clean sleeve 2 of specification afterwards and place between two spacing sleeves 5. The coupling sleeve 7 is then rotated so that the coupling sleeve 7 is coupled to the cleaning sleeve 2. And finally, fine adjustment is carried out on the axial positions of the two limiting sleeves 5, so that the cleaning sleeve 2 can normally rotate.
When the device is installed, the diversion notch 4 can utilize the gas flow in the environment, so that the cleaning sleeve 2 rotates, the brush 3 cleans the attachments on the lightning rod 1 in the rotating process, and the fallen attachments can be discharged out of the device from the discharge hole 521.
The following explains the effects of the above scheme:
this embodiment provides a lightning arrester cleaning device, can rotate through the air current drive, utilizes the brush to clean the emission of attaching to on the lightning rod at rotatory in-process to avoid the attachment to cause the influence to the lightning-arrest effect of lightning arrester. Simultaneously, be between spacing sleeve and the lightning rod in this device, be between clean sleeve and the connecting sleeve and dismantle the connection, consequently this device can be installed on the lightning rod of different specifications. In addition, because the cleaning sleeve in the device adopts a split type design, the installation difficulty is lower, and the overhead working time of operators can be shortened.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A lightning receptor cleaning device, characterized in that: comprises a cleaning component and a limiting sleeve (5); the cleaning assembly is sleeved on the lightning rod (1), two ends of the cleaning assembly are respectively rotatably connected with the limiting sleeve (5), and the limiting sleeve (5) is detachably connected with the lightning rod (1); the cleaning assembly comprises a cleaning sleeve (2) and a brush (3), the brush (3) is arranged on the inner wall of the cleaning sleeve (2), and bristles of the brush (3) are in contact with the side wall of the lightning rod (1); be equipped with water conservancy diversion incision (4) on clean sleeve (2), when water conservancy diversion incision (4) inside has the air to flow, clean sleeve (2) will use lightning rod (1) to rotate as the axle.
2. A lightning receptor cleaning device according to claim 1, characterised in that: the cleaning assembly comprises a connecting sleeve (7), one end of the connecting sleeve (7) is rotatably connected with the limiting sleeve (5) through a plane bearing (6), and the other end of the connecting sleeve is detachably connected with the cleaning sleeve (2).
3. A lightning receptor cleaning device according to claim 2, characterised in that: spacing sleeve (5) are including a toper section of thick bamboo (52), the small-bore end of a toper section of thick bamboo (52) upwards extends has positioning segment (51), and the large-bore end is to week side extension ring support board (53) be equipped with grooving (511) on positioning segment's (51) the top surface.
4. A lightning receptor cleaning device according to claim 3, characterised in that: the top of connecting sleeve (7) is equipped with and holds chamber (71), inside annular supporting plate (53) set up and hold chamber (71), be equipped with between annular supporting plate (53) and the top surface that holds chamber (71) planar bearing (6).
5. A lightning receptor cleaning device according to claim 3, characterised in that: a discharge hole (521) is arranged on the conical cylinder (52) below the cleaning sleeve (2).
6. A lightning receptor cleaning device according to claim 3, characterised in that: be equipped with holding tank (512) on the lateral wall of location section (51), be equipped with staple bolt (8) in holding tank (512) inside.
7. A lightning receptor cleaning device according to claim 2, characterised in that: the two ends of the cleaning sleeve (2) are provided with external threads, and the connecting sleeve (7) is provided with a threaded hole (72) matched with the external threads.
8. A lightning receptor cleaning device according to claim 1, characterised in that: the cleaning sleeve (2) comprises a first semicircular plate (21) and a second semicircular plate (22), and the two semicircular plates are oppositely spliced to form the cylindrical cleaning sleeve (2).
9. A lightning receptor cleaning device according to claim 8, characterised in that: the splicing surface of the first semicircular plate (21) is provided with at least two positioning pins (211), and correspondingly, the splicing surface of the second semicircular plate (22) is provided with positioning holes (221) for accommodating the positioning pins (211).
10. A lightning receptor cleaning device according to claim 1, characterised in that: the opening area of the diversion incision (4) close to the outer wall of the cleaning sleeve (2) is larger than the opening area of the diversion incision close to the inner wall of the cleaning sleeve (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920647092.0U CN210386696U (en) | 2019-05-07 | 2019-05-07 | Lightning arrester cleaning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920647092.0U CN210386696U (en) | 2019-05-07 | 2019-05-07 | Lightning arrester cleaning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210386696U true CN210386696U (en) | 2020-04-24 |
Family
ID=70345304
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920647092.0U Expired - Fee Related CN210386696U (en) | 2019-05-07 | 2019-05-07 | Lightning arrester cleaning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210386696U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112315387A (en) * | 2020-11-02 | 2021-02-05 | 章晓飞 | Energy-saving building roof cleaning device with lightning protection function and based on wind energy |
| CN112600076A (en) * | 2021-01-06 | 2021-04-02 | 南京微熙珂贸易有限公司 | Lightning arrester with rain collecting and drying functions |
| CN113309675A (en) * | 2021-07-09 | 2021-08-27 | 深圳普泰电气有限公司 | Lightning protection system of wind generating set |
| CN113920900A (en) * | 2021-10-09 | 2022-01-11 | 武汉硕业文化传媒有限公司 | Outdoor self-cleaning type billboard |
-
2019
- 2019-05-07 CN CN201920647092.0U patent/CN210386696U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112315387A (en) * | 2020-11-02 | 2021-02-05 | 章晓飞 | Energy-saving building roof cleaning device with lightning protection function and based on wind energy |
| CN112315387B (en) * | 2020-11-02 | 2021-11-30 | 深圳市金恒辉装饰工程有限公司 | Energy-saving building roof cleaning device with lightning protection function and based on wind energy |
| CN112600076A (en) * | 2021-01-06 | 2021-04-02 | 南京微熙珂贸易有限公司 | Lightning arrester with rain collecting and drying functions |
| CN112600076B (en) * | 2021-01-06 | 2022-04-08 | 朱琦 | Lightning arrester with rain collecting and drying functions |
| CN113309675A (en) * | 2021-07-09 | 2021-08-27 | 深圳普泰电气有限公司 | Lightning protection system of wind generating set |
| CN113309675B (en) * | 2021-07-09 | 2021-12-31 | 深圳普泰电气有限公司 | Lightning protection system of wind generating set |
| CN113920900A (en) * | 2021-10-09 | 2022-01-11 | 武汉硕业文化传媒有限公司 | Outdoor self-cleaning type billboard |
| CN113920900B (en) * | 2021-10-09 | 2023-09-29 | 耀成科技股份有限公司 | Outdoor self-cleaning type billboard |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN210386696U (en) | Lightning arrester cleaning device | |
| CN108278537B (en) | Lamp with self-cleaning capability | |
| CN210171015U (en) | Natural gas filter | |
| CN114273129B (en) | Omnidirectional spraying mechanism for protective paint on inner wall of pipeline | |
| CN218159916U (en) | Dust filtering component, transformer housing and transformer | |
| CN210824508U (en) | Organosilicon dust absorbing device | |
| CN110947704B (en) | Intelligent electromechanical blockage clearing device | |
| CN211722989U (en) | Filter screen cylinder | |
| CN215543396U (en) | Spraying angle adjustable is dust removal all-in-one for stainless steel pipe | |
| CN210067360U (en) | Portable wall device that whitewashes of interior decoration | |
| CN212883158U (en) | Spraying device for thermosetting powder coating | |
| CN212680456U (en) | Henhouse dust fall atomizer for cooling | |
| CN210675707U (en) | Protection device for motor spraying | |
| CN114481000A (en) | Powder thermal spraying rotating frame with protection function | |
| CN214865501U (en) | Tobacco roller convenient to material is stained with in clearance | |
| CN219229749U (en) | Dust cup structure convenient to clean | |
| CN216397225U (en) | Detection apparatus for pipeline under pressure | |
| CN211752792U (en) | Domestic sewage treatment filtration membrane module clamps mechanism | |
| CN210961774U (en) | Split type columnar mini dust collector with detachable filter for dust falling | |
| CN212808341U (en) | Wind speed sensor adjusting device | |
| CN210961778U (en) | Split type columnar mini dust collector with higher strength at joint | |
| CN218669439U (en) | Tunnel dryer with filtering mechanism | |
| CN212597679U (en) | Drill bit for aluminum suction pipe cleaning machine | |
| CN218471504U (en) | Electric power iron tower signboard | |
| CN210572233U (en) | Portable indoor air detection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200424 Termination date: 20210507 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |